Armature winding machine



Feb. 23, 1954 J. M. BIDDISON ARMATURE WINDING MACHINE l0 Sheets-Sheet 1Filed Nov. 25 1951 U m w mysufon.

14/5 ATTO 1 JIE.

Feb. 23, 1954 BIDDISON 2,670,145

ARMATURE WINDING MACHINE Filed NOV. 23, 1951 lo Sheets-Sheet 2 III I.- l60 -ll\ i 62 l 52 50 II! INVENTOR.

Feb. 23, 1954 J BlDDlSON 2,670,145

ARMATURE WINDING MACHINE Filed NOV. 23, 1951 Sheets-Sheet 5 62 6B 125120 54 8o 12 I 44 I 92 f 0 6 r l 1 v o 10E 74 I62 fl:

IN VEN TOR.

Feb.

Filed Nov. 23, 1951 J. M. BIDDISON ARMATURE W INDING MACHINE l0Sheets-Sheet 5 wx r O (D G F N BY U Feb. 23, 1954 J. M. BIDDISON2,670,145

ARMATURB WINDING MACHINE Filed Nov. 2:, 1951 10 Sheets-Sheet 6 IN VENTOR Feb. 23, 1954 Filed NOV. 23 195) Illiii 1111mm; ee 390 J. M.BIDDISON ARMATURE WINDING MACHINE} 10 Sheets-Sheet 7 IN VEN TOR.

HIS .4770? 5Y5 F 2 1954 J. M. BIDDISON ARMATURE WINDING MACHINE l0Sheets-Sheet 8 Filed Nov. 25, 1951 illi I wh H 1 l0 Sheets-Sheet 9 J. M.BIDDISON ARMATURE WINDING MACHINE Feb; 23, 1954 Filed Nov. 23, 1951 1954J. M. BIDDISON ARMATURE WINDING MACHINE 1O Sheets-Sheet 10 Filed Nov. 231951 JIE. 22

JIE. 21

INVENTOR.

HA5- flTTOE' 5Y5 Patented Feb. 23, 1954 ARMATURE WINDING MACHINE John M.Biddison, Dayton, Ohio, assignor to Harry W. Moore, Dayton, OhioApplication November 23, 1951, Serial No. 257,711

Claims. 1

This invention relates to a coil winding machine and the method ofwinding armatures and more particularly to a coil winding machineadapted to wind and lay coils in slots formed between radially disposedteeth, such as a rotor or an armature.

In the manufacture of rotors or armatures and certain types of stators,wherein the coils are laid in slots formed between radially disposedteeth or projections, leads project from the coils for attachment into acircuit either through the commutator bars, slip rings or terminals,depending upon the type of machine in which the windings are to be used.In some of these machines an even number of coils are used, permittingthe use of two fliers or spinner heads, so as to wind a pair of coilssimultaneously. In other machines, however, an odd number of coils areused. In this type of structure, double fliers have not been used, forthe reason that two coils are wound simultaneously, thereby the machineis unable to accommodate an odd number of coils.

An object of this invention is to provide a coil winding machine havingtwo fliers, wherein one of the fliers may be used independently of b theother, so as to permit the winding of the odd numbered coil. This hasbeen accomplished by interconnecting the two fliers by a clutchmechanism such that the clutch mechanism when adjusted into one positionwill cause one of the fliers to rotate and when in another position willcause both of the fliers to rotate.

Another object of this invention is to provide mechanism for formingleads extending from the coils, these leads being of unequal length, sothat one lead is longer than the other lead from the coil. This has beenaccomplished by projecting lead-forming members or hooks into the pathof the wire being wound at the proper time, the mechanism projectinginto the path consisting of hooks unequally spaced, so that when onehook engages the wire being wound, one loop or lead is formed and whenanother hook engages the wire, another loop or lead is formed. This hasbeen accomplished by reversing the fliers through a fraction of arevolution, 180 more or less, and for some types of windings rotatingthe rotor or form receiving the winding through the width of one toothin one direction, so as to cause the return lead to be placed in anadjacent slot, then after the fliers have been returned to their homeposition, returning the rotor to the original position before continuingthe winding of another coil or pair of coils, as the case may be. Thisresults in a tooth on the rotor functioning as an anchor for theprojecting loop.

Another object of this invention is to provide a control mechanism foraccurately arresting the movement of the fliers when the fliers areactuated into a predetermined position, so as to accurately control theoperation of the coil winding machine. This has been accomplished by theuse of a cam mechanism rotating in unison with one of the fliers and acam follower that is moved into operative position with the cam forcontrolling the stopping of the fliers, the cam follower causing theclutch used in driving the coil winding machine to be disengaged whenthe filers are in a predetermined position and causing a brake to beapplied to the fliers so as to arrest the movement of the fliers at theproper time and in the proper position.

Another object of this invention relates to the method of winding aplurality of coils wherein a. lead is placed in an adjacent slot to thecoil after a soil has been completed and before a succeeding coil iswound, so that the tooth between the adjacent slots functions as ananchor for positively holding the lead in position.

Another object of this invention is to provide an armature wherein alead for a coil is anchored upon the tooth of the rotor or the stator,as the case may be.

Other objects and advantages reside in the construction of parts, thecombination thereof and the mode of operation, as will become moreapparent from the following description.

Referring to the drawings, Figure l is a perspective elevational view ofthe driving and operating mechanism of a coil winding machine.

Figure 2 is a fragmentary cross sectional view of the clutch and brakemechanism.

Figure 3 is a fragmentary cross sectional view taken substantially onthe line 3-41 of Figure 2.

Figure 4 is a fragmentary side elevational View of a clutch and brakecontrol mechanism, disclosing the position of the clutch controlmechanism when the coil winding machine is stoppped.

Figure 5 is a view similar to Figure 4, showing the position of thecontrol mechanism when the brake is released.

Figure 6 discloses the clutch control mechanism in the position when itis ready to start.

Figure 7 discloses the clutch control mechanlsm when the clutch isconnected so as to drive the coil winding machine.

Figure 3 discloses the control mechanism in the position near thecompletion of the winding of a coil.

Figure 9 is a perspective view of a portion of the cam and the camfollower used in causing the so as to cause the spring M to exert apressure tending to rotate the member I3 in a counterclockwisedirection, as viewed in Figure 9.

As the rod 52 is actuated downwardly, the member I3 is biased in aclockwise direction, as viewed in Fig. 9, and out of the path of theplunger I20. The control rod 62 is actuated downwardly by a hydrauliccylinder or electromagnet actuated by means of a control switch startingthe operation of the coil winding machine. When the detent 60 engagesthe pin 58. the clutch member 30 engage the pulley 2t, so as to causethis pulley to drive the shaft 26 and the parts associated therewiththrough a suitable gear mechanism, which has not been shown. As may bestbe seen by referring to Figure 20, the shaft 26 drives shafts 80 and BIin opposite directions by means of the pinions 492, 493 and 494.

As may best be seen by referring to Figures 4 to 10, the shaftjournalled in the housing 33 and used in driving the fliers, as willappear more fully later, has fixedly mounted thereon a pair of earns 82and 64. The shaft 80 rotates in synchronism with the fliers, as willappear more fully later.

A cam follower 86, mounted upon a pintle 88 supported upon thebifurcated end of a bracket member 90, cooperates with either the cam 82or the cam 04 to release the clutch at the proper time. The bracketmember 90 is pivoted upon the shaft 66 and is biased in acounterclockwise direction, as viewed in Figures 4 to 3, by a tensionspring 02. The bracket member 92 supports a pin 04 that is normallyengaged by a detent 96 carried on a lever 90 pivoted upon a pivot itsfixed to the housing 38. The lever 98 has integral therewith an arm I02supporting a pin I04. The lever 98 is biased in a clockwise direction,as viewed in Figures 4 to 8, by a tension spring I96. When the detent 96engages the pin 00, the bracket member 90 is held in a position suchthat the cam follower 86 does not come in contact with either one of thecams. The lever 03 is rotated in a counterclockwise direction by a camIIO fixedly secured to the shaft II2. If, for

example, the fliers used in laying the wires in the slots so as to formthe coils are to lay l6 loops for each coil, the fliers will rotate 16times whil the cam IIO makes one revolution. When the cam III), whichrotates in a clockwise direction, as viewed in Figures 4 to 8, engagesthe pin I04, the detent 96 is moved out of engagement with the pin 04,permitting the tension spring 92 to actuate the bracket member 90 in acounterclockwise direction, as viewed in Figures 4 to 8, into theposition shown in Figure 9. The cam follower 06 will then contact eitherthe cam 82 or the cam 84, depending upon the position of the camfollower.

In Figure 10 the cam follower 86 is shown in contact with the cam 82.When the cam 82 or the cam 84, as the case may be, actuates the camfollower 06 in a clockwise direction, as shown in Figures 4 to 8, theplunger I20 engages an arm I22 of the bell crank member I3 mounted uponthe lever 64. While the windings or layers of a coil are laid inposition the control rod 62 is raised, thereby releasing the forceapplied to the pin I2, so as to cause the tension spring III to rotatethe bell crank member I3 in a counterclockwise direction, as viewed inFigure 9. The arm I22 is then moved into the path of the plunger I20.From this it can readily be seen that as the cam follower 86 is actuatedin a clockwise direction, as viewed in Figures 4 to 8,

the latch member or lever 64 will be actuated in a clockwise direction,so as to cause the detent 68 to clear the pin 60, permitting thecompression spring 32 to actuate the clutch member 30 from engagementwith the pulley 20 and so as to apply the brake, thereby arresting themovement of the part driven by the clutch. A set screw I24 threadedlyengaging a capping member I26 is used in adjusting the position of theplunger I20, so as to cause the clutch to be released and the brakeapplied at the proper time. During the time that the cam I III is inengagement with the pin I04, a pin I30, carried by the outer end of thelever 08, releases a microswitch I32, the function of which will bedescribed more fully later. When the latch member 60 is moved out ofengagement with the pin 60, an arm I34 moves downwardly, as viewed inFigures 4 to 8, so as to open the microswitch !36, as clearly shown inFigures 4 and 5. Normally the microswitch I36 has no function other thanto intercept the operation of the winding machine in the event member 60for some reason or the other fails to properly engage the pin 60.

The cam follower 86 is mounted for axial movement on the pintle as. Abifurcated lever 38, as best seen in Figure 9, pivot-ally mounted to thebracket member 90 at I22, is provided with a pin I44 engaging an arcuateslot in member Mil. Member Ice is pivotally mounted upon a shaft I43supporting a crank arm I50 provided with a pin I52 supporting a springI54 extending through a pin I36 in member M0. The shaft I48 may brotated in a clockwise direction, as viewed in Figure 9, by a crank armIE9 engaging an armature I62 actuated by an electromagnet its. Wheneverthe electromagnet IE4 is energized, member I65 is actuated in aclockwise diroot-ion, as viewed in Figure 9, so as to shift the earnfollower from the cam 82 to the cam 84. This electromagnet IE4 isenergized by a cam actuated micro-switch, not shown, that is controlledby a cam that makes one revolution during a complete armature windingcycle. The armature shown in Figure 14 has 11 slots. One side of each oftwo coils are placed in each slot. Thus, 11 coils are required for thcompletely wound armature. When winding the armature by this machine,one coil is first wound. The remaining 1 coils are wound two at the sametime. Thus, five pairs of coils are wound. When the fifth pair of coilsis being wound, the electromagnet IE! is energized to shift the camfollower from the cam 82 to the cam 84.

It is to be noted that the two cams 82 and B4 are 180 out of phase. Whenin the process of winding an armature, at the end of the first coil oreach pair of succeeding coils, with the exception of the last pair ofcoils on the armature, the fliers are stopped in a predeterminedposition, as will appear more fully later. When the armature has beencompletely wound, the cam follower 85 is then actuated so as to contactthe cam 60, so as to stop the fliers in another position out of phasewith the first position referred to above. Normally, the lever M51 isbiased in a counterclockwise direction, as viewed in Figure 9, by atension spring I66, shown in Figures 4 to 8 inclusive, but omitted fromFigure 9 for the purpose of clearness.

Fliers for laying wires in slots The shaft 8i extends from the housing38 and has one end of the shaft projecting into a housing I'III. Theshaft 30 has one end projecting into amusin m... h mime hei a-. Peal-aing into the housing; I18 drivesthroughsuitable.

I12, as'best seen in Flgurell, projects into a:

tubular sleeve or shaft I88, that is optionally connected for driving(connection tothe shaft 88 by an interrupter mechanism, which will nowbe, described. The, arrangement of the gears 452, 483 and 494 issuch.that the shafts 88 and 81 are driven in opposit directions. Whenwinding only one coil, only one flier is used. When winding two coilssimultaneously, two fliers are used. When only one flier is used, it isnecessary to disconnect the other flier from the driving mechanism. Thishas been accomplished by an ,odd slot interrupter mechanism, that willnow be described.

Odd slot interrupter mechanism This interrupter mechanism includesmember I82 keyed to the tubular sleeve or shaft H38. Member I82 isprovided with a plurality of radially disposed apertures I84, I86, I88.I88 and I82, as best seen in Figure 12. It is to be noted that there arefive of these apertures, the apertures being unequally spaced. Aninterrupter member 194 is provided with notches I84a, 136a, 188a,

I880. and IBM, spaced so as to register with the apertures I84, I88,I88, I98 and I82 when in one position and only in one relative positionwith respect to member I82. A plurality of notched pins 288, 282, 284,28Band 288, one for each of the apertures I84, I88, I88, I88 and I82,project into these apertures and are supported upon an annular member2I8 keyed upon a plurality of bolts 2i! and spring urged away frommembers I82 and I84 by compression springs 2I4, as best seen in Figures11 and 12. Each of the pins 288, 282, 284, 286 and 288 is provided withan inwardly directed notch 216. The distance from the center of theshaft 88 to the bottom of each notch 2I8 is greater than the radius ofmember I84 splined to the end of the shaft 88. When member 2I8 is in theposition shown in Figure 11, the notches 2l8 are located outwardlybeyond member I94. A hydraulic cylinder 228, provided with a piston rod222 functioning as a plunger, engages the boss 224 of member 2 I8. Whenfluid is supplied to the piston in the cylinder 228- to actuate thepiston rod or plunger 222 to the left, as viewed in Figure 11, thenotches 2I8 will be caused to move towards the left, as viewed in Figure11, to a position such that the notches 2I6 clear member I84. It canreadily b seen that when the notches are moved into a position so as toclear member I94, member I84 rotates with the shaft 88 without rotatingmember I82 and without rotating the tubular sleeve I88.

The tubular sleeve or shaft I88 drives a gear not shown that meshes withanother gear, not shown, that actuates a flier or spinner 238 seen inFigure 15. This spinner 238 includes an arm 232 and the spool or pulley284 over which the wire passes. From this arrangement, it can readily beseen that when the piston in the cylinder 228 actuates the plunger 222to the left, as

viewed in Figure 11, and the shaft 88 is rotated, the spinner I14 willcontinue torotate, but the spinner 238 remains idle. At the time thespinner 238 remains idle, a brake shoe 248 actuated by a hydraulicpiston 242 engages th periphery of member I82 so as to prevent the flieror spin- ,chuck member 262.

her 238 from rotation. When .the plunger 222; moves into the positionshown in Figure 11, the. compression springs 2 I4 will actuate member218 into the position shown in Figure 11 only when all of the notches inmembers 288, 282, 284,; 288,

and 288 register withthe notches IBM, IBM, IBM, IBM and I92arespectively. Assoon,as. these register, the spring 212 snaps members2l8into the position shown in Figure 11, thereby, causing members 288 to288 inclusive to eng ge. member I94, so asto cause member I82 and thetubular shaft driven thereby .to actuate ,the filer 238.,

Chucks for supporting the armature or form to be wound Thehousingsflfltand ll2 are mounted upon; slidable members 248 engagingdovetailed g ides 258 for adjustment so that members 248 are movabletoward and away from each other and thereby the housingsIiI! and Il2-are movable toward and away from each other, as best seen in Figure15. The housing.I18 supports a chuck member 268 and the housing I12supports a, Thes chuck members are, nonrotatablymounted in fixed spacedrelation from the housings I18 and l'i2 respectively. As may best beseen by referring to ,Figure ld, each of th chuck members 288-and 282isprc wid edv with arcuate surfaces 284,.and286, -adaptedto engage anarmature 218.

Armature indexing mechanism Within the chuck members 288 and 262cmlocated pawl members 212 and 214 respectively, pivoted at 216 and 218,-the pivots being mounted upon slidable plungers 288 and 282respectively. The pawl members 212 and 214 are urged into contact withthe armature by springs 284 .and 288. The plungers, 288 and 282 arebiased downwardly, as viewed in Figure 14, by compression springs 288and 288,- the downward movement. causing set screws 282 and 294 toengagethe pawl members 212 and 214, so as to move the pawl members out of 5contact with respect to the rotor when the rotor has been rotated intoregistry, that is, into the proper position so as to. properly align theslots to be wound. Whenever it is found desirable to rotate the rotoradis tance of one notch in a counterclockwise direc-.- tion, as seen inFigure 14, a plunger 388,- actuated by a hydraulic cylinder 384, asbestseen in Figure 13, is raised upwardly, so as to engage. the plunger288, thereby actuating the pawl memher 212 upwardly to cause thepawl toengage a. succeeding tooth and then as the plunger 388 is lowered intohome position, as best seen in Figure 14, the spring 288. actuates theplunger 288 downwardly, causing the pawl member 212 to rotate thearmature.218 through a distance equal to the pitch of the teeth.However, in order to effect registry of the armature, it is necessary.to release the chuck members by separating the chuck members a shortdistance.

As may best be seen by referringto Figure 13, this has been accomplishedby means of a cam surface 386 in the side oi the' plunger 388 ens gaginga cam follower 388 actuating a plunger 8 I 8 against a compressionspring 3 I2, the plunger 3I8 engaging a setscrew 3 I4+properly adjustedin member248. As the plunger 388 is raised, the cam surface 388.actuatesthe cam follower 388, so as to move member 248ioutwardly andtherewith the housing I18'and the chuck 268. A likearrangement isprovided for actuating the arms.-

ture in a clockwise direction, as viewed in Figure 14, by a plunger 332engaging the plunger 282.

In winding an armature oi the commutator type and also other types ofarmatures, it is necessary to make provision for leads extending fromthe ends of the coils to commutator segments or whatever the structurehappens to be. This has been accomplished by providing loops between thecoils.

Mechanism for forming lead loops When fine wire is used in windingcoils, the current density in the windings of the armature may be toogreat if all the current passes through the windings. In order to holdthe current density down to the desired quantity so as to reduce heatlosses, the center of each coil is tapped so as to reduce the currentflowing through the windings into one-half the total current generatedin the cell. This is accomplished by providing a loop between the twohalves forming a coil.

In some types of armatures two half coils are laid in the same pair ofslots. That being the case, it is necessary in some manner to identifythe lead loops that connect the coils in the same slot from the leadloops connecting coils of adjacent slots. One method of identifyingthese two sets of lead loops is to make one set of lead loops longerthan the other set of lead loops. If, for example, the short lead loopsconnect a pair 01 halves really forming two coils located in the sameslot, then long lead loops are used to connect the coils located inadjacent slots, or vice versa.

The end of the shaft supporting the commutator projects into an aperture320 in a support 322. A pair of Wing-like members, or loop or leadstripping members 324 and 326 extend in opposite directions from theaperture 320. The lead stripping members 324 and 326 are pivotallymounted at 328 and 334 to the support or frame member 322. Compressionsprings 332 and 334 bias the lead stripping members 324 and 326 towardeach other. The support 322 has pivotally mounted thereon two sets ofhooks 340, 342, 344 and 343. The hooks 343 and 342 are of equal length.The hooks 344 and 346 are also of equal length, but shorter than thehooks 340 and 342. The hooks 344 and 344 are pivotally mounted upon a.pivot 343 and the hooks 342 and 346 are pivotally mounted upon a pivot350. The hook 343 is provided with an extension 352 and the hook 344 isprovided with an extension 354. The

extension 352 is aligned with a pin 356 mounted in a floating member orsliding support 384 mounted for sliding movement in a guide way formedby the support 322. A pin 362 is aligned with the projection orextension 354 laterally disposed with respect to the hook 344. A similararrangement is provided for the hooks 342 and 34%; mounted on the underside of the support 322 and the floating member 364, as viewed in Figure1?.

The two wing-like members 324 and 326 are moved outwardly in oppositedirections from the armature shaft by means of a plunger 312 engagingthe sliding support 330, causing pins 334 and 363 to engage laterallydisposed projections 33!! and 3'30 of the wing-like members 324 and 333,so as to cause the wing-like members to spread outwardly and in oppositedirections, in that member 330 is mounted for movement in the framemember 322. When these wing-like Ii) members 324 and 326 move outwardly,the loops, not shown, are deflected outwardly out of the path of thewires being wound in the slots, as will appear more fully later.

The hooks 343, 342, 344 and 345 are moved outwardly either individuallyor in pairs, depending upon the relative position of an actuating member383. This actuating member 330 is mounted upon a tubular sleeve 362surrounding the plunger 312, as best seen in Figure 19. An eccentric pin384 is connected to an armature member 383 that may be actuated to theright, as viewed in Figure 19, by an elcctromagnet 350, and to the left.as viewed in Figure 19, by by an electromagnct 332. When the armaturemember 385 is actuated to the right. as viewed in Figure 19, actuatingmember 333 is rotated in a clockwise direction. When the armature memberis actuated to the left, actuatug member 333 is rotated in acounterclockwise irection. The armature member 386 supports a pair ofpins 334 and 393, the pin 394 engaging an L-shaped bracket 333 pivotedupon a pivot 43!) in a slidable base 402. The pin 393 engages anL-shaped bracket 434 pivoted at 435 to the sliding base 532. The upperends of bracket members 398 and 434 are interconnected by a tensionspring 4E4. It can readily be seen that when the armature member 333 ismoved to the right, as viewed in Figure 19, the L-shaped bracket 404 isalso moved to the right; but the L-shaped bracket 333 is preeluded frommoving to the right, in that the base of the i..shaped member 333engages the sliding base 432. In other words, bracket memher 434 can berotated in a clockwise direction from the position shown in Figure 19and bracket member 398 can be rotated in a counterclockwise directionfrom the position shown in Figure 19 about their respective pivots; butmember 4% cannot rotate in counterclockwise direction and member 39%cannot rotate in a clockwise direction from their respective full linepositions. ihus, member 434 moves to the right when the electromagnet3513 is energized and member 398 moves to the left when theelectromagnet 392 is energized. Whenever these electromagnetic aretie-energized, the compression spring 4(3 restores the armature member386 to the home position shown in Figure 19. At no time are bothelectromagnets 35.: and 352 energised simultaneously. Only one of theseis energized at a time.

Actuating member 384 is provided with a pair of diametrically disposedrecesses 423 and 428. In addition thereto, actuating member 333 isprovided with a recess .24 and a recess or aperture 424. When actuatingmember is actuated forwardly, as viewed in Figure 19, or to the right asviewed in Figure 18, it actuates the pins 356 and 362, causing the hooks343 and 344 to move laterally or upwardly, as viewed in Figure 17. Atthe same time, actuating member 383 engages the pins 351 and 333 toactuate these pins forwardly, as viewed in Figure 19, or to the right,as viewed in Figure 18, to actuate the hooks 342 and 336 toward theobserver, or downwardly as viewed in Figure 17. In the event thearmature member 386 is actuated to the right, as viewed in Figure 19, soas to actuate or rotate actuating member 333 in. a clockwise direction.as viewed in Figure 19, a slot .7.2; will register with the pin 352 andthe slot 424 will register with the pin 333. This will cause the hooks349 and 342 to move outwardly beyond the wings 324 and 328; but thebooks 344 and 34% will not move armor r45 11 outwardlygfor thereasonthat the pins actuating tthese particular hooks willdrop into therecesses 420 and $428. Thus, onlyone pair of: books is moved outwardlywhenactuating member 389 is rotated in a clockwise direction, as shownin.

:Figure 19, whereas all of the hooks are rotated outwardly whenactuating "member 380 is' actuated to the right, as viewed in Figure 18,when .the armature member 3% is in the home Or neuvtral position.

When the electromagnetdfl is energized to :actuate the armature member.386 1 tothe left. as viewed. in Figure 19, the pins andElM will thenregister with the apertures 42% and 42$.

When this takes places. the pins 35'! and 363 will;

actuate the hooks 342 and 346 outwardly beyond the wing 32 i; but thehooks 34c and. 344 will not move, in that the pins 353. and 382 dropinto the recesses 42s and 52?. respectively. so that member 336 will notactuate these pins. Actuating member. 339 via actuated to the right, asshown in Figure 18, by means of a pin dil mounted in an extensioniMZupon the slidable base cm. The pini44ll is aligned with aplunger orpiston444, fluid driven by means of piston in the cylinder -146. Thewings 324 and-325are spread. by a lever 459pivota'lly'mounted at 452and'actunted by a plunger '454 connected to a piston. in thecylinder-455. It can. readily be seen that as the. plunger 458 isactuated to the left, as viewed in Figure 18, the lever'dfill will berotated to the right-so as to. actuate the plunger: 312 to therebyactuate the wing-like members 324 and 3225. so as to spread the leadloops, not shown.

When the clutch member 30 is in neutral position, that is, outofcontact-with the pulley 20 andwithout contact with the brake surface as.the fliers and themechanismassociated therewith are free to rotate.Duringthe normal winding operation at the end-:01" acoil, with theexception of the last coil, the fliers will stop in substantially theposition shown in Figure .15.

Reversing mechanism for reversing the fliers In order to form a loop atthe end of a coil, 5

the fliers are actuated in a reverse direction through an angle ofsubstantially 180. In order to get. the proper phase relation of thewindings, :the fliers: are actuated inopposite directions while windingcoils. That being the case, the flier .230 isactuated upwardly andrearwardly from the position shown in Figure 15 throughsubstantially 180and'the flier I14 is actuated downwardly and, rearwardly throughsubstantiallyl80 by a 'mechanism which will now be described.

The;shaft 8U has rotatablrmountcd thereon arpinion 46!! .thatis engagedbyqa toothed rack 462 hydraulically driven froma hydraulic cylinder, notshown; which is used in actuating the then in a reverse directionthrough its downward stroke. As soon'as therack 462 is actuated up--=wardly. a'bracket 464 attached thereto is also moved upwardly. Thisbracket 464 engages a bell crank member 466 provided with a detent 468-and pivoted upon apin-410. The bell crank member 466 is biased in aclockwise. direction, as viewed in Figure 21, by a torsion sprin 411,'ehownimFigures ZO-and 22. The pin 1411! forminga pivot for the bellcrank lever 456 is mounted 7o 1 upon a bracket 4T2 fixedly secured tothe pinion .480. That being the case, as rack member 462 is raisedupwardly, as viewed in Figure 21, the bracketMIZ together with thepinion460 begins --set acrewvfll iszaddustcd: toga; positiom suchthatasthe racka lfilispralsed, the set screw 414.com"- rled by the bracket4B4 moves out of engagement with the bellcrank lever 466, 'whioh'isbiased in a clockwise direction by the spring 411,. causmg thezdetent468to dr0p into a notch Main-an annular member 482 keyed to the shaft '80.Thereby, the shaft!!!) will be rotated in a counterclockwise directionshortly after the rack- 462 begins to move upwardly, as viewed inFigural. It can be. readily seen from an inspection of Figure 20 thatthe differential consists of the -.bev-elled gears483 keyedto theshaftaflll, 482 keyed to? the: shaft 326 an'dz494 ckeyed to the shaft :8l .Th'ls geariarrangement will cause the .fiiers to moverin: a reversedirection providing thepins 2001:0208 to engage the interrupter member184. -Whenxtherack 462 is actuated upwardly into. a position suchuthatithe switch'. actuating member ifllhclosesthe switolrfiflt', anelectromagneticrcon- 'trol for theipistonflfi is actuated so astoactuate *memberslflll. to the righheasrviewed in Figurejii, causingone or more of the hooks 340 toiMGcto *mouezoutwardly into fthe'path 0fthe wires; carriedzby'therfliers which have nowxbeen reversed:toia'position suchthat the" fliers band ll4'have moved beyond theposition-of theahooks. one or. more'ot these hooks is projectedoutwardly nd the: rash-4621s actua/tedsdownwardly, zasw viewed 'inFigure 1,1.thefhersiwlllreversezsoras to move back: into: the position:"showninI-Figure -15 cbut :during this. reverse movement the wires.extendi from the filers to thecarmature 'mcmbervwill engage-r their.respective. hooks-zoo as: to: form a1 loop 135, in" the wire, as will:appear more fully. duringthe description of the mode of operation ofthe'rcoil winding machine.

Mode of .opemtion Thismachine is very flexible, in that it may: be useda'rnautomatie lly winding armatures: having windings of variouspatterns. For example, i it may be used: t nwinding armatures with.aneven :rmmberrof slots .or .itlmay bausedin winding armatures having an.oddrnumber .of slots. It may be used=inwinding annatures' wherein-eachcoildsprovidedwith a lead extending from-each ofthe coil. It mayfialsobeused in winding 'Larmaturesewherein the coiism're made from fine wirerequhingone on more taps so as to reduce the current-density through theturns.

Eon the, purpose ofillustrationthe coil winding uevicerwillbezdcscribedias winding an armature having. arrroddanumber of slots,wherein the coils ere made ofzfincwire requiring: center taps. .If

tail-amidst liZ- areythen advanceitoward eachnther. rack upwardlythrough its upward stroke and 0-sorasrto snugiy'choldrvthe armature-inposition.

Thefiiers FM sand 230 are normally positioned 11B0I011l1 0f jahase:fromiithe ;position shown in *liigure 15. .Upon the winding machinebein started, eitherthe :plunger 300 or the plunger 302, depending uponthe particular setting, is actuated. upwardly; so.- as. to causethe.pawl memberrillzon thepawlmember 214, depending upon the :particularplunger that is being used, .to engage artooth in'the armature-t0 rotatethe armature into such a position that oneslot registerswiththeguidingsurfaces of the chucks 280 :and .262. Theitwoslotsthatarelocatedoppoasite :Jrhe single :slot :each has a .marginthereof rfiush with -;the curved :wire guiding surface :of

torotate in a counterclockwiseidirectlnn. The :15 tthe :chucksziflflmr1'z62,..asithe mass mayzbams clearly shown in Figure 14. By indexingthe armature before initiating the first winding, the work of theoperator is reduced, in that it is merely necessary for the operator toinsert the armature with the shaft projecting into the aperture 326,then close the chucks 266 and 262 in readiness for the windingoperation. It is not necessary for the operator to carefully adjust thearmature into registry. This is done automatically.

For some patterns of armature windings wherein an odd number of slots isfound in the armature, requiring an odd number of coils, the oddnumbered coil is first wound and thereafter the coils are wound inpairs. Furthermore, for some types of patterns, no lead loop is formedwhen initiating the winding operation of a flier. That is, the flierI'M, used in winding the first coil, is not used in producing a leadloop when initiating the winding of the flrst coil. Likewise, when thefirst pair of co ls are wound, after the first coil has been wound, thecoil wound by the flier 230 is not used in producing a lead loop, inthat the ends of the wires extending beyond the armature are clamped ina suitable clamping mechanism in front of the winding machine and areused in forming the first terminals of these coils. Also, in somepatterns, no lead loop formed when the two final coils have been woundto complete the winding operation of the armature.

Due to the fact that there are an odd number of slots in the armature,an odd number of coils are required. That being the case, the coilwinding machine has been so adjusted that upon initiating the windingoperation, the piston and the cylinder 22!! cause the piston rod 222 toen gage a boss 224 of annular member 2E5}, so as to actuate the notchedpins 2m: to M3 inwardly, whereby interrupter member 1% registers withthe slots 184a to 192a. At the same time, the piston and the cylinder242 applies the brake 240 to the periphery of member Hi2, so as toprevent member it: from rotating. By this arrangement, it can readily beseen that the flier 230 will not rotate, in that this flier isdisconnected from the driving mechanism. The flier reversing mechanismis now ready to operate. The notch 58B is now 180 out of phase with theposition shown in Figure 21. That being the case, the pawl 458 will notengage the notch on. the up stroke. At or near the end of the up stroke,the detent 468 drops into the notch 486 so as to return the flier lit tothe front position shown in Figure 15. By this time the clutch member31} has been forced into contact with the pulley 2B. This isaccomplished by actuating the rod 62 downwardly. As soon as the clutchmember it engages the pulley 20, the winding oper ation begins, in thatthe flier I'M rotates to wind a coil in the top slot and the lower slotlocated adjacent member 250, that is, the left slot of the two lowestslots. No lead loops are formed when initiating the winding of the firstcoil. That being the case, the hooks 3M and 342 remain the homeposition, so as to be located out of the path of the wires.

The shaft H2 supporting the cam H3 ha been connected by gears, such thatthe sh aft l i2 will make one revolution when the desired munber ofturns have been wound to complete onehalf of a coil. If, for example, acoil turns, there will be 16 turns in one-half of coil or 16 coilwindings. In order to win-:2 15 turns, the flier I'll must make 16revolutions. In other words, the gear ratio between the driving 14mechanism for the flier I14 and the shaft H2 is 16 to 1. When the camIII] has made one revolution, or shortly before the sixteenth revolutionof the flier I'M is completed the cam H0 engages the pin HM mounted onmember 98 to thereby actuate the detent out of engagement with the pin94. This permits the cam follower 86 to drop into contact with the cam82. The cam 82 has been so positioned that the shaft 80, rotating insynohronism with the shaft 8|, makes half a revolution before the camfollower 86 actuates the plunger I20 a distance sufficiently great toactuate the latch member 64 to cause the detent 58 to clear the pin 60.As soon as the detent 68 clears the pin 6!], the compression spring 32snaps the clutch member 30 out of engagement with the pulley 2E} andinto engagement with the friction or brake surface 36, so as to stop therotation of the flier I14 almost instantly and always in the samerelative position.

As soon as the movement of the flier has been arrested, control rod 62is actuated downwardly so as to cause the collar 6| to engage stopmember 63, which was actuated into the position shown in Figure 5 duringthe winding operation, to release the brake.

Upon the brake being released, the rack member M32 begins its upwardstroke, as viewed in Figure 21. Before the detent 468 drops into thenotch two, a switch 5! is closed by a switch actuating member or earn560, causing one of the plungers 300 or 302, that are hydraulicallyoperated, to advance upwardly and then return so as to index thearmature to present adjacent slots to the winding position. Which one ofthe plungers 309 or 302 is used, depends upon the pattern of thewindings used in winding the armature. Let it be assumed that theplunger 300 is actuated upwardly, so as to cause the armature to berotated through a distance of one notch in a counterclockwise direction,as viewed in Figure 14. This takes place before the detent 46B enagesthe notch 480. As the rack member 462 is advanced upwardly, the bracket454 is raised, so as to release the bell crank lever 466, causing thedetent 45% to engage the notch 480. When this takes place, the shaft Bilis rotated in one direction and the shaft 8| in the opposite direction.The shaft 3! reverses the flier E14 through an angle of substantially Asthe rack 462 approaches the upper limits of its stroke, switch actuatingmember can closes the switch 502, causing the plunger 302 to moveupwardly to actuate the pawl 214 into engagement with a succeeding notchin the armature so as to index the armature through the distance of onenotch in a clockwise direction, as viewed in Figure 14, returning' thearmature to its original position. It can readily be seen that by thisarrangement the wire has been wrapped around one tooth of the armatureduring the reverse movement of the plunger. Thus, the lead wire isanchored upon this tooth. At approximately the same time. the valvecontrolling the fluid supplied to the hydraulic cylinder MB is actuated,thereby actuatin the plunger M4 to the right, as viewed in Figure 18,and with it actuating member 380, causing the pins 356 and 362 toactuate the hooks 3d? and 346 into the path of the wire ben-t wound bythe flier I'M. When both hooks are actuated into the up position, theloop will be formed on the shorter hook 346.

As soon as the rack #62 has reached its up position, it begins thereverse stroke, reversing the rotation of the flier H4 so as to actuatethe filer anemones into the position shown in Figure 115. Whcn \the rackkfi2-icomeszoo restlin theiposition shown in Figure lo after it has beenreversed and refl'reversed through 180", the 'winding'operation is thenresumed by momentarily raising the control rod 62 from the positionshown in Figure 5 into-the position shown inFigure 4,the upward movementof the rod causing member 6 to actuate theswitch arm w, therebyenergizing the e-lectromagnet that has not been shown, so as to actuatestop memberi63 out of the path of collarGl. The rod 621is then lowered,so as to actuate 'the control lever 52, releasing the brake, which mayhave been -momentarily applied, actuating the lever-52 downwardly a dis-'tance sufficient to permit the detent lB to engage .thepinGa. The'camfollower BGupon beingaactuated by: the cam 82rhas moved the bracket 00 adistance suflicient to permitthe detent 96 to engage thepin :34. When.the detent 96 engages the pin M "and thedetent'iia engages the spin-60,the switches 32 and l36-arecloaed. If, for some reason, the detcnts =96and Gil-do not engage their respectivepins, one of the switches or bothof the switches l32'and l36'will remain open, thus causing theinterruption'of theoperation: of the coil winding machine.

When'the twodetents'engage their respective .pins,=the winding operationresumes. laying another '16- turns of wire intothe some mir or slots.When Idlayers or turnsihaveheenlaid into the slotspthe shaft 2 isrotatedthrough another revolution, the cam H0 engaging the pin HM tocausethedetent It -to release thepin 94, permitting the cam wfollower to dropinto con- --tact with the-cam 82. The cam -82 is then approximately18Dout of :phase with the position "shown for the cams! in Figures Brand'7. When the-cam is rotated into the positionshown in Figures 6 and '7.the cam follower ltlagaincauses detent'is "to clear the pin, therebyreleasing the clutch-andrsuddenly'.applying the brake, arrcstin themovement of theflier H4 in the position shown in Figure '15.

The flier rsversing mcchanism is then again set in motion. The rack462rbeginning'its-upward movement, closes the switch'olllgcausingthe;plunger 300 tu bo projected upwardlypac- -tuating the-mmfolloweriflil, so'as to release the chucks slightly, vtmpermit thearmatureto he'indexcd. Upon theireturnlof the plunger illil, the springactuates plunger lflflrdownwardly, so as to cause-tho pawlez-l2to-actuate the iarmature in-a counterclockwise direction through adistance of .one tooth and one notch. Whemthe ther 414 approaches 180.in-thereverse diree- -tion,so.as to be in'a posit-ionsubstantiallylflfl opposite from the posltionshownin Figure 15, theelectromagnet 392 is energized -so .as to retate actuating member 380 toa distance such that the pins 352.211 161.56v register with theapertures 42 i and-M6, to:make these twopins inacitive..Thetleadingwireof the firstcoil wound by theflier, in some windingpatterns-as explained above, is not used informing "a loop,.in that,

the: end of the wire projects outwardly from the 'oppositeendofthe'armature. After the coils are "all wound, the lead isthen laid in"an adjacent -slot for-connection to theterminal, whether it besicommutator segment or a slip ring. Both the ripins-efl'iand 351arethen actuated upon'the fluid being supplied'lto the cylinder '6,machmte the piunger fl-tto ltherighaasviewed in ,iligule 18, actuating:rmember i380 rto the right, scanning both of thezhoolssl' anand448ttobe pro- ,i'ectcd into theEfpathrof the wire beingwoundby theflier H4. The. hook. 31%! already has -a loop thereon, held there fromthe time the first =coil was wound. The hook 34-6 being actuated intothe pathof the wirebeing wound, forms a loop. Thereare now two loops.When the winding :01! 'the succeeding coil is about to be initiated, thecylinder 456 actuatestheplunger 454 to-actuate the lever-450 whichactuates the rod 31 2170 cause the loop deflectors 324 and 326 to spreadoutwardl stripping the leads from the hooks-342 and 346, which hookshave been previously retractecl. The armature is not indexed, butremains in the indexed position so as to present anew slot. at the topofthe armature in the winding position, as viewed in Figure l4. ThelflierPM is returned to the home position.

Before the last reversal of the flierllfl took place, the fluid'in thecylindenliil hasbeenreleased, so asto permit the spring-2415 co-actuatemember ll-to the right, as viewed in Figure 11, thereby causingthenotched pins-Z00 to "2 08 to engage the proper notches in member I84,sons to cause the flier 230 to be engagedanddriven.

-- Thistakes .placeat the time that the flier I14 is in thereversedposition shown in Figure 15, in that the flier.230 was arrestedin its movement in a position 180 out of phase with the position showninFigure 15.

The fiier 230 is actuated with the flier I'M .from

the reverse position into the. home positionv shown in Figure 15,. inthat the interrupter. has novcbeen used in connecting the flier 230 tothe drive. shaft 80. From now until the completion ofthe Winding of thecoil, bothfliers operate simultaneously, but rotate in reversedirections. Thefliers rotate at the same speed, so as to make the. samenumber of revolutions in the same period of time. Upon lfiturns beingvlaid, the flier I14 placing .16 turns in the upper slot and lfiturns inthe lower left exposed slot and the flier 2'30 placing 16 turns in theupper slot andlfi turns in the lower right exposed slot, the cam I I0engages the pin [04, which in reality is a cam follower, so as toreleasethe bracket .90, permitting the camfollower 86 todrop into engagementwith the cam 82. When the cam 82 actuates the cam followerBG, so as torelease the clutch engaging lever 52, the brake is applied, arrestingthe fliers I14 and 230 in the, position shown in.Figure 15. The armatureis then indexed, the fliers reversed through 180, the electromagnet 290energized, so as .to actuate member 380111 a clockwise direction, asviewed in Figure .19, and then the piston or plunger .444 actuated, soas to actuate member 380 to the righaasviewed in Figure 18,.project ingthe hookst'lll and 342 into the path of the wires.

The armature is then indexed in the reverse direction, so as .toallowthe fliers to wind the second coil in the unexposed slots. Theiflierslare reereversed, a lead loop isi'ormed as the center tap of the coils,thehooksretracted and the winding operation resumed, so as to wind thesecond set of coils or the second half of each coil located in theexposed slots, the fliers continuing to rotate until 16 turns have beenlaid in position, the cam I l 0 engaging the pin or cam follower IM torelease the bracket '90, permitting the cam follower 86 to engage thecam 82, the cam 82 actuating the cam follower so as to trip the clutchlever arm 52 to again apply the brake, arresting the fliers in theposition shown in Figure .15.

.The .armatureJs 'now indexed, athe fliers -re- "versed and uponuthefliers being rsversedrthe hooks project into the path of the wires fromthe fliers. The fliers are then re-reversed, without returning thearmature to the initial position. The fliers, upon being re-reversedinto the position shown in Figure 15, are now ready to resume thewinding of coils in the new set of slots. The hooks are retracted, thelead loop deflectors 324 and 326 spread so as to actuate the loops heldby the hooks out of the path of the fliers in readiness for thesucceeding winding operation. These cycles are repeated until before thecam Ill] engages the pin I 04. During the winding of the last set ofcoils to complete the windings on the armature, the cam follower 86 isactuated by the electromagnet I64, so as to be aligned with the cam 84.Then, when the cam I engages the pin I04, so as to trip the bracket 90,the cam follower 86 drops into engagement with the cam 84, causing thefliers to stop in a position substantially 180 out of phase from theposition shown in Figure 15. This is to cause the fliers to be locked ina position to permit the removal of the armature and the loading of anew armature core, the armature being laid with the leads positioned ina holder, not shown, so that the wires extend from one armature to thesucceeding armature when the winding operation begins on the succeedingarmature. It is merely necessary for the operator to position thearmature core to be wound in position as described above, to initiatethe operation of the machine so as to repeat the cycles described.

When the new armature is being wound, the operator severs the lead fromthe previously wound armature and deposits the wound armature upon aconveyor or in a receptacle, as the case may be. These operations arecontinued. The period of time required to wind an armature iscomparatively short. The armatures are always uniformly wound.

In the event a different pattern is used, the cycles of operation may bevaried. The number of turns in each coil may be changed by changing thegear ratio between the shaft 80 and the cam shaft H2. If, for example,there are to be 24 turns to each coil, the gear ratio would then bechanged from 16-1 to 24-1. In the event no center tap is required, thenthis operation of the cycle is eliminated.

The above mode of operation has been described merely for the purpose ofillustrating the operation of the machine. This mode of operation fitsone particular wind ng pattern. The mode of operation, of course, willbe varied to meet other types of winding patterns. For some types ofwork, the winding machine may be controlled manually. In the event onlya few armatures of one particular pattern are to be wound, the machinemay then be controlled manually, rather than taking time out to changethe gear ratios and alter the various electrical circuits, et cetera.

When the armatures are wound automatically, a system of cams is used forcontrolling the electrical circuits similar to the system of cams shownin the Harry W. Moore application Serial No. 73,927, filed February 1,1949, for Automatic Armature Winding Machine, now Patent No. 2,627,379.

Although the preferred embodiment of the device has been described, itwill be understood that within the purview of this invention variouschanges may be madein the form, details, proportion and arrangement ofparts, the combination thereof and mode of operation, which generallystated consist in a device capable of carry- 18 ing out the object setforth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. In a control mechanism for a coil winding machine wherein thewindings are laid in armature slots by means of a flier driven from asuitable prime mover through a clutch, which clutch includes a pair ofclutch members one of which is movably mounted, stationary brake meansarranged in spaced relation from the movable clutch member, said brakemeans being adapted to cooperate with said movable clutch member to forma brake, said movable clutch member having three positions namely, aneutral position when the movable clutch member is out of engagementwith the other clutch member and out of engagement with said brakemeans, said movable clutch member having clutch engaging position whenit is moved into engagement with the other clutch member, and a brakeposition when it is moved into contact with said brake means to form abrake, a spring for urging the movable clutch member out of clutchengaging position and into contact With a stationary brake means, saidcontrol mechanism including clutch arm means for actuating the movableclutch member into clutch engaging position, a detent lever for holdingthe clutch arm means in a position to hold the clutch members in closedposition, and means for releasing the detent, said means including apivotally mounted bracket, a cam follower mounted on the bracket, a cam,means for rotating the cam in synchronism with the flier, a spring forbiasing the bracket so as to cause the cam follower to be urged intocontact with the cam, a pivotally mounted lever having a detent engagingthe bracket for holding the cam follower out of engagement with the cam,a second cam, means for driving the second cam so as to cause this camto make one revolution when the flier rotates the required number ofrevolutions to Wind a coil, said second cam actuating the lever duringthe last revolution of the flier completing the winding of the coil,said second cam releasing the detent so as to disengage the bracketcausing the bracket to move the cam follower into engagement with thefirst mentioned cam, and means connected to the bracket for actuatingthe first detent lever out of engagement with the clutch arm means so asto cause the clutch to be disengaged and so as to actuate the movableclutch member into engagement with the brake means to thereby arrest themovement of the flier in a predetermined position.

2. A device according to claim 1, wherein there is a third cam driven insynchronism with the flier, said third cam being substantially out ofphase with respect to the first mentioned cam, and means for sh ftingthe cam follower laterally from the first cam driven in synchronism withthe flier to the third cam driven in synchronism with the flier tothereby cause the flier to stop in either one of two positionssubstantially 180 out of phase with respect to each other.

3. A device according to claim 1, wherein a stop member is provided forholding the clutch arm means in a position where the movable clutchmember is out of engagement with both the clutch and the brake to permitrotation of the flier independently of the prime mover and the brake.

4. A device according to claim 1, wherein a stop member is used inarresting the movement of the clutch arm means to hold the movableclutch member in a neutral position, and means for reversing themovement of the flier through an angle of 180 when the movable clutchmember is in neutral position.

5. An interrupter mechanism for use in interrupting the operation of oneflier of a coil winding machine having a pair of fliers driven from acommon prime mover, said interrupter mechanism including a notchedmember driven by the prime mover, the notches in the notched memberbeing unequally spaced peripherally, a second member supporting aplurality of notched pins seated in the notches of the notched member,means for supporting the notched pins, said means including a driveshaft for driving one of the fliers, means for causing a relativemovement between the notched pins and the notched member, the notchedpins when actuated so as to cause the notches therein to straddle thenotched member disengaging the notches in the notched member to permitthe notched member to rotate without rotating the notched pins and theshaft driven thereby, the pins being unequally spaced so that when thepins engage the notches in the notched member the shaft is alwaysinterconnected to the notched member in the same relative position.

6. An interrupter mechanism according to claim 5, wherein 'the means forcausing a relative movement in one direction between the notched pinsand the notched member is a fluid driven plunger and in the otherdirection is a compression spring.

7. An interrupter mechanism according to claim 5, wherein the notchedmember is splined upon a shaft, and wherein the means for supporting thenotched pins includes a tubular shaft surrounding the first mentionedshaft.

8. An interrupter mechanism for use in interrupting the operation of oneflier in a coil winding machine having a pair of fliers driven from acommon prime mover, said interrupter mechanism including a drive shaft,a notched member splined upon the shaft, the notches of the said notchedmember being peripherally located and unequally spaced, a tubular shaftsurrounding said first mentioned shaft, an annular member flxedlyattached to the tubular shaft, said annular member having a plurality ofapertures, a plurality of notched pins slidingly mounted in saidapertures, a supporting member having fixedly secured thereto thenotched pins, said pins being unequally spaced so as to correspond tothe unequal spacing of the notches in the notched member, saidsupporting member being axially located with respect to the annularmember, compression springs for biasing the annular member and thesupporting member away from each other, the notches of the pins beinglocated in the same relative positions, means including a plunger foractuating the supporting member towards the annular member so as tocause the notches in the pins to register with the notched member, thenotches in the pins providing clearance for the notched member to permitrotation of the notched member independently of the pins so that as theplunger actuates the pin supporting member to cause the notches in thepins to register with the notched member the notched member is free torotate independently of the pins.

'9. An interrupter mechanism according to claim 8, wherein the notchedmember is mounted for sliding andnon-rotative movement upon its shaft, acompression spring for urging 'the notched member towards the annularmember so that when the pin supporting member is actuated away from theannular member the notches in the pins actuate'the notched member awayfrom the annular member until all of the pins register with the notches,then the compression spring actuates the notched member towards theannular member as soon as the notches in the notched member registerwith their respective pins.

10. An interrupter mechanism according to claim 8, wherein a brake isapplied to the periphery of the annular member for preventing rotationthereof, and means for applying the brake when the notches in "the pinsregister with the notched member so as to prevent rotation of theinterrupted flier.

11. An interrupter mechanism according to claim 8, wherein a brakemechanism is used for preventing rotation of the interrupted flier,means for applying the 'brakamechanism only when the notches in the pinsregister with the notched member.

12. A loop forming mechanism for use in forming loops or lead extensionsat the terminals of coils that arewound'by fliers-rotating through acircular path, said loop forming mechanism including a pair of pivotallymounted hooks. each of said hooks being provided with a lateralextension, resilient means for holding the books out of the path of thewire being wound by the fliers into coils, selective means'forprojecting one or both hooks into the path of the wire, said selectivemeans including a pairoi pins aligned with the extensions of the hooksto rotate the respective hooks abouttheir pivots, an actuator foractuating oneor both of thepins, said actuator having an aperture inonesurface thereof, said actuator having two lateralpositions, in one ofwhich positions the aperture in the actuator registers with one of saidpins means for moving the actuator laterally from one position to theother, and means for actuating the actuator in the longitudinaldirection of the pins so as to push both pinsinto engagement with theextensions of thehooks to project both the hooks into the path of thewire when the actuator is in one lateral position, and so as tocause onepin to register with the aperture therein when in the otherlateralrpositlon when one pin is actuated in response to movement of theactuator so as to project only one hook into the path of the wires usedin winding the coil.

13. A loop forming mechanism according to claim 12, wherein a secondpair of hooks are mounted for movement into the path of a second flier,and wherein the actuator may be moved laterally into a third position,the actuator having two additional apertures into which the pins used inactuating one pair of hooks drop when the actuator is actuated into thethird position to make these hooks inoperative when the actuator isactuated in the directionof' the pins.

14. The method of windingan armature coil provided with lead loopslocated on one side of the'armature, which armature-coil is Wound uponan armature having peripheral slots located between teeth, the stepsincluding laying the first turn beginning'on the side of the armatureopposite the side where the lead loops are to be formed. laying thewindings oi the first coil in a pair of slots, completing the windingsof the coil with the iast'turn-terminatmgon the side of the armatureopposite'the side havingthelead loops, returning the lead wire in aslot'adiacent the slot

